Replace LGTM with Github Actions

[thomas-bc]

Originating Project/Creator
Affected Component
Affected Architectures(s)	Github Actions
Related Issue(s)
Has Unit Tests (y/n)
Builds Without Errors (y/n)
Unit Tests Pass (y/n)
Documentation Included (y/n)

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Change Description

Adds a Github Actions workflow that runs the security and quality static code analysis in order to phase LGTM out.

Rationale

lgtm.com will be shut down at the end of the year.

Future Work

Remove the LGTM configuration files once it's fully shut down.

Comments

Results should be viewable once the checks are done. It's currently running all queries from the security-and-quality suite, let me know if we want to filter some categories out.

[LeStarch]

@thomas-bc can you add these words to .github/actions/spelling/expect.txt? This is how to fix the spelling issues. I found these in the spelling action log:

configs
deserializes
funcs
toolchains

[LeStarch]

This looks good. It is catching issues already...